/Engine/Source/Runtime/Engine/Classes/Engine/CloudStorageBase.h
Kick off an async query of documents that exist in the cloud. If any documents have already been retrieved, this will flush those documents, and refresh the set. A CSD_DocumentQueryComplete delegate will be called when it completes (if this function returns true). Then useGetNumCloudDocuments()andGetCloudDocumentName()to get the information about any existing documents.
true on success, false otherwise.
virtual bool QueryForCloudDocuments()